Grain impurity removing and sifting device

Abstract

The invention relates to the technical field of grain impurity removal, in particular to a grain impurity removal screening device which comprises a screening box, a fixing frame is fixedly installed outside the upper side of the screening box, supporting frames are fixedly installed on the two sides of the fixing frame, and a filtering box is jointly and fixedly installed between the two supporting frames. Grain in a spreading frame is turned over when a turning plate rotates, the spreading frame is pushed in cooperation with a cam, so that the grain in the spreading frame is evenly scattered, impurities in the grain are fully removed, suspended particles in the grain penetrate through a filter screen in a fan-shaped groove to be blown into a side hopper through starting of a fan, and the grain is uniformly spread. When the center shaft rotates, the grains are turned over in the filtering box, the draught fan can evenly blow away suspended particles in the grains, impurities in the grains can also be blown into the side hopper, and when the direction adjusting plate rotates, the draught fan is driven to evenly blow air to the grains. And suspended particles and light impurities in the grains are fully filtered out.

Description

Technical Field

[0001] The invention relates to the technical field of grain impurity removal, in particular to a grain impurity removal and screening device. Background Art

[0002] Grain refers to the general term for various plant seeds in cooking food, which can also be generally referred to as "cereals". There are many ways to remove impurities from grain, among which wind screening is a method to screen out undesirable factors from newly harvested grain. Newly harvested grain contains many impurities, including organic impurities such as grass seeds, straw, soil, sand and gravel. If these impurities are not removed, they will accumulate in some parts of the grain pile, causing the grain pile to heat up and mold.

[0003] The prior art discloses a Chinese patent with application number CN201910350706.3, which discloses an environmentally friendly grain impurity removal and drying machine. The machine removes dust, empty shells and other debris from the grain by suctioning air through a cylinder body and utilizing the automatic falling of grain. At the same time, negative pressure is drawn in the drying box, thereby accelerating the drying rate of the grain while achieving the drying and impurity removal functions.

[0004] Since grains are piled up layer by layer during processing, impurities accumulated inside the grains cannot be removed. The above-mentioned device cannot fully remove the impurities inside the grains, and the suspended particles in the grains are difficult to filter out. Summary of the invention

[0005] The purpose of the present invention is to provide a grain impurity removal and screening device to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A grain impurity removal and screening device comprises a screening box, a fixed frame is fixedly installed on the outer upper side of the screening box, supporting frames are fixedly installed on both sides of the fixed frame, a filter box is fixedly installed between the two supporting frames, an arc-shaped opening is opened on the upper part of the filter box, a spreading unit is provided on the upper part of the fixed frame, the spreading unit comprises two groups of outer frames installed on the upper part of the fixed frame, two outer frames of each group have moving blocks slidably installed on the side close to each other, two moving blocks are fixedly installed on the side close to each other, a spreading frame is fixedly installed between the two spring bars, guide plates are slidably installed on both sides of the lower part of the outer frame, the guide plates support the lower part of the spreading frame, two fixed blocks arranged up and down are fixedly installed on the side of the fixed frame on one side away from the outer frame, a cam is installed on the upper end surface of the fixed block through motor rotation, springs are connected to the front and back of both sides of the spreading frame, and a sliding kit located on the outside of the outer frame is fixedly installed on the side of the spring away from the spreading frame.

[0008] Furthermore, a discharge plate is slidably installed on the front side of the spreading frame through an electric slider, a stop plate is rotatably installed on the side of the spreading frame away from the discharge plate through a torsion spring, a slide plate is slidably installed on the upper end surface of the spreading frame, a collecting bucket is detachably installed on the lower part of the spreading frame, telescopic rods are symmetrically installed on the side of the fixed frame away from the filter box, the telescopic ends of the two telescopic rods are jointly fixedly installed on a connecting frame, a moving frame is slidably installed on the outside of the connecting frame, sliding rods are slidably installed at the four corners of the moving frame, a rectangular frame is jointly fixedly installed on the lower part of the multiple sliding rods, a spring is sleeved on the outside of the sliding rods, and a plurality of groups of flip plates are slidably installed in the middle part of the rectangular frame through an electric slider.

[0009] Furthermore, a central column is slidably installed in the middle of the filter box through an electric slider, and multiple groups of flip frames are circumferentially arranged on the outer wall of the central column. Rectangular through grooves are opened on both sides of the flip frames, and T-shaped rods are slidably installed in the through grooves. Springs are arranged on the outside of the T-shaped rods, and two T-shaped rods pass through one end of the flip frame and are jointly fixed with a sliding frame.

[0010] Furthermore, the middle part of the sliding frame is set up through, and a magnetic plate is placed between the sliding frame and the turning frame. The magnetic plate is convenient for absorbing metal in the grain when receiving the grain. The sliding frame is symmetrically provided with a limiting groove on the side away from the turning frame. The limiting plate is slidably installed in the limiting groove, and a spring is connected between one side of the limiting plate and the limiting groove.

[0011] Furthermore, a groove is opened on one side of the filter box, an outer edge frame is fixedly installed outside the groove, a central axis is installed in the middle of the outer edge frame for transverse rotation, one end of the central axis passes through the outer edge frame and a gear is fixedly installed, and a direction adjusting plate located in the center of the outer edge frame is fixedly installed in the middle of the central axis. The direction adjusting plate is located in the groove when it rotates, and multiple fans are provided on the side of the direction adjusting plate close to the filter box.

[0012] Furthermore, a rotating rod is rotatably installed on the upper part of one side of the outer edge frame, and a front frame fixedly connected to the outer edge frame is provided directly below the rotating rod. The front frame is L-shaped and a rotating plate is rotatably installed on the side close to the outer edge frame through a motor. A driving plate is fixedly installed in the middle of the rotating rod, and teeth meshing with the gear are provided at the lower part of the driving plate. A swing frame fixedly connected to the rotating rod is provided on the side of the driving plate away from the outer edge frame, and the cylinder on one side of the rotating plate is always located in the swing frame.

[0013] Furthermore, a fan-shaped groove is circumferentially opened on one side of the filter box away from the outer edge frame, a side bucket is provided on the side of the fan-shaped groove away from the outer edge frame, the side bucket is rotatably connected to the filter box, a discharge port is opened on the upper part of the side bucket, and a through groove is opened on the lower end surface of the filter box.

[0014] Furthermore, a rotating rod is rotatably installed at the bottom of the inner cavity of the screening box through an electric slider, a conical plate is fixedly installed on the top of the rotating rod, a plurality of circumferentially arranged guide bars are provided below the conical plate, the guide bars are fixedly connected to the rotating rod, a lifting plate is slidably installed on the outside of the plurality of guide bars, a screen drum is fixedly installed on the outside of the lifting plate, an annular frame is rotatably installed on the outside of the screen drum, and a spring is circumferentially fixedly installed between the outside of the annular frame and the side wall of the inner cavity of the screening box.

[0015] Furthermore, a discharge port is opened on one side of the bottom of the screen drum, a fixed plate is annularly fixedly installed on the upper part of the inner cavity of the screen drum, an elastic rod is slidably installed on the fixed plate, a spring is sleeved on the outer side of the elastic rod, an electric push rod is fixedly installed on the lower end surface of the screen drum, a blocking plate is fixedly installed on the telescopic end of the electric push rod, and a discharge plate that passes through the screening box is provided below the blocking plate.

[0016] Furthermore, a filter is provided in the fan-shaped groove. When the grain is tumbling in the filter box, the fan blows the suspended particles in the grain through the filter to the side bucket and finally discharges them through the discharge port. By rotating the side bucket with the discharge port facing downward, the suspended particles remaining in the side bucket are removed.

[0017] Beneficial effects of the present invention:

[0018] 1. The present invention pushes the spreading frame when the cam rotates, and the spreading frame drives the grain to be screened left and right under the action of the spring rod, so that the sand and impurities in the grain are preliminarily removed. The spreading frame is provided with multiple spreading frames to improve the efficiency of grain impurity removal.

[0019] 2. The present invention drives the connecting frame to move toward the spreading frame by retracting the telescopic rod. When the connecting frame moves, it pushes the baffle plate to flip it. When the connecting frame moves to the inner cavity of the spreading frame, the electric slider is turned on to rotate the flip plate. When the flip plate rotates, the grain in the spreading frame is flipped. At this time, the spreading frame is pushed by the cam so that the grain in the spreading frame is evenly spread, thereby more fully removing impurities in the grain.

[0020] 3. The present invention receives the grain after the spreading rack is lowered by the magnetic plate, and the magnetic plate can also absorb the metal particles in the received grain. When the metal particles on the magnetic plate after a certain period of use are removed, the magnetic plate to be cleaned is rotated to the arc-shaped opening above the filter box, and then the two limit plates are slid to move the two limit plates in the direction away from each other, and then the sliding frame is pulled upward to cancel the fixation of the magnetic plate, and then the magnetic plate is taken out.

[0021] 4. The present invention uses a fan to make the suspended particles in the grain pass through the filter screen in the fan-shaped groove and blow it into the side bucket, and finally filter it out through the discharge port. When the electric slider is turned on to drive the central axis to rotate, the grain is turned over in the filter box. At this time, the fan can evenly blow away the suspended particles in the grain, and the opening of the fan can also blow the impurities in the grain into the side bucket. The motor is turned on to drive the rotating plate to rotate, and the rotating plate drives the swing frame to swing left and right when it rotates. At this time, the swing frame synchronously drives the driving plate to swing left and right through the rotating rod. When the driving plate swings left and right, it drives the central axis to rotate by meshing with the gear. When the central axis rotates, it drives the adjustment plate to rotate. When the adjustment plate rotates, it drives the fan to evenly blow the grain received on the magnetic suction plate, so that the suspended particles and light impurities in the grain are fully filtered out.

[0022] 5. The present invention drives the lifting plate to rotate synchronously when the rotating rod rotates. The arrangement of the conical plate facilitates the dispersion of the falling grains so that they fall evenly into the screen drum. When the grains fall into the screen drum, the screen drum drives the grains to shake up and down under the action of the spring. At this time, the lifting plate slides up and down on the guide bar, and the screen drum rotates along with the rotating rod, so that the grains in the screen drum are sieved up and down while rotating, and impurities mixed in the grains in the screen drum are filtered out. When the screen drum rotates, the grains are brought into contact with the elastic rod, so that the elastic rod stirs the grains, and the screen drum bumps up and down while hitting the elastic rod. The elastic rod bumps up and down and hits the screen drum, which further intensifies the filtering out of impurities in the grains. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall rear side structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall front section structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the dispersed unit structure of the present invention;

[0028] Figure 5 It is a partial cross-sectional structural schematic diagram of the spread-out rack of the present invention;

[0029] Figure 6 It is a schematic diagram of the filter box structure of the present invention;

[0030] Figure 7 It is a schematic diagram of the internal structure of the screening box of the present invention;

[0031] Figure 8 It is a partial cross-sectional structural schematic diagram of the rotating rod and the screen drum of the present invention;

[0032] Fig. 9 It is a schematic diagram of the outer edge frame structure of the present invention;

[0033] Fig.10 It is a schematic diagram of the internal structure of the filter box of the present invention.

[0034] The reference numerals in the figures are as follows:

[0035] 1. Screening box; 10. Fixed frame; 11. Supporting frame; 2. Spreading unit; 21. External frame; 22. Moving block; 23. Spring rod; 24. Spreading frame; 241. Discharging plate; 242. Stop plate; 243. Slide plate; 25. Guide plate; 26. Collecting bucket; 27. Fixed block; 271. Cam; 28. Telescopic rod; 281. Connecting frame; 282. Moving frame; 283. Rectangular frame; 284. Flipping plate; 3. Filter box; 31. Center column; 32. Flipping frame; 33. T-bar; 34. Sliding frame; 35. Magnetic plate; 36. Limiting groove; 37, limiting plate; 38, outer edge frame; 381, central axis; 382, ​​adjustment plate; 383, fan; 384, gear; 385, rotating rod; 386, front frame; 387, rotating plate; 388, driving plate; 389, swinging frame; 39, side bucket; 390, discharge port; 12, rotating rod; 121, conical plate; 122, guide strip; 13, lifting plate; 14, sieve drum; 15, ring frame; 16, discharge port; 17, fixed plate; 171, elastic rod; 18, electric push rod; 181, blocking plate; 19, discharge plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] A grain impurity removal and screening device is a filtering method for filtering out suspended particles, impurities and metal particles in grains, belongs to the advanced environmental protection industry, and is specifically a type of air pollution prevention and purification equipment.

[0038] like Figure 1-Figure 10As shown, it includes a screening box 1, a fixing frame 10 is fixedly installed on the upper side of the screening box 1, and supporting frames 11 are fixedly installed on both sides of the fixing frame 10. A filter box 3 is fixedly installed between the two supporting frames 11. An arc-shaped opening is opened on the upper part of the filter box 3. A dispersion unit 2 is provided on the upper part of the fixing frame 10. The dispersion unit 2 includes two groups of outer frames 21 installed on the upper part of the fixing frame 10. A moving block 22 is slidably installed on one side of the two outer frames 21 of each group, and a spring rod is fixedly installed on the side close to the two moving blocks 22. 23, a spreading frame 24 is fixedly installed between the two spring rods 23, and guide plates 25 are slidably installed on both sides of the lower part of the outer frame 21. The guide plates 25 support the lower part of the spreading frame 24. One side of the fixed frame 10 is fixedly installed with two fixed blocks 27 arranged up and down on the side away from the outer frame 21. A cam 271 is installed on the upper end surface of the fixed block 27 through the rotation of a motor. Springs are connected to the front and back of both sides of the spreading frame 24, and a sliding kit located outside the outer frame 21 is fixedly installed on the side of the spring away from the spreading frame 24.

[0039] Pour the grain onto the spreading rack 24, start the motor to drive the cam 271 to rotate, and the cam 271 pushes the spreading rack 24 when it rotates. Under the action of the spring rod 23, the spreading rack 24 drives the grain to be screened left and right, so that the sand and impurities in the grain are preliminarily removed. The spreading rack 24 is provided with multiple blocks to improve the efficiency of grain removal. By pulling the spreading rack 24 forward, the moving blocks 22 on both sides slide in the outer rack 21, and the spreading rack 24 is placed above the arc-shaped opening on the upper part of the filter box 3 to facilitate the discharge of the grain after the initial screening.

[0040] A discharge plate 241 is slidably installed on the front side of the spreading frame 24 through an electric slider, a stop plate 242 is rotatably installed on the side of the spreading frame 24 away from the discharge plate 241 through a torsion spring, a slide plate 243 is slidably installed on the upper end surface of the spreading frame 24, and a collecting bucket 26 is detachably installed on the lower part of the spreading frame 24, and telescopic rods 28 are symmetrically installed on the side of the fixed frame 10 away from the filter box 3, and the telescopic ends of the two telescopic rods 28 are jointly fixedly installed with a connecting frame 281, and a mobile frame 282 is slidably installed on the outside of the connecting frame 281, and sliding rods are slidably installed at the four corners of the mobile frame 282, and a rectangular frame 283 is jointly fixedly installed on the lower part of multiple sliding rods, and a spring is sleeved on the outside of the sliding rod, and a plurality of groups of flip plates 284 are slidably installed in the middle part of the rectangular frame 283 through an electric slider.

[0041] By turning on the telescopic rod 28 to retract, the telescopic rod 28 retracts to drive the connecting frame 281 to move toward the spreading frame 24. When the connecting frame 281 moves, it pushes the retaining plate 242 to flip it. When the connecting frame 281 moves to the inner cavity of the spreading frame 24, the electric slider is turned on to rotate the flip plate 284. When the flip plate 284 rotates, the grain in the spreading frame 24 is flipped. At this time, the cam 271 is used to push the spreading frame 24 so that the grain in the spreading frame 24 is evenly spread, thereby more fully removing impurities in the grain.

[0042] A central column 31 is slidably installed in the middle of the filter box 3 through an electric slider, and a plurality of groups of flip frames 32 are circumferentially arranged on the outer wall of the central column 31. Rectangular through grooves are opened on both sides of the flip frames 32, and T-shaped rods 33 are slidably installed in the through grooves. A spring is sleeved on the outside of the T-shaped rods 33, and two T-shaped rods 33 pass through one end of the flip frames 32 and are fixedly installed with a sliding frame 34.

[0043] The middle part of the sliding frame 34 is through-set, and a magnetic plate 35 is placed between the sliding frame 34 and the turning frame 32. The magnetic plate 35 is convenient for absorbing metal in the grain when receiving the grain. A limiting groove 36 is symmetrically provided on the side of the sliding frame 34 away from the turning frame 32. A limiting plate 37 is slidably installed in the limiting groove 36, and a spring is connected between one side of the limiting plate 37 and the limiting groove 36.

[0044] The magnetic plate 35 receives the grain after the spreading rack 24 is lowered. At the same time, the magnetic plate 35 can also absorb the metal particles in the received grain. When the metal particles on the magnetic plate 35 after a certain period of use are removed, the magnetic plate 35 to be cleaned is rotated to the arc-shaped opening above the filter box 3, and then the two limit plates 37 are slid to move the two limit plates 37 in a direction away from each other, and then the sliding rack 34 is pulled upward to cancel the fixation of the magnetic plate 35, and then the magnetic plate 35 is taken out.

[0045] A groove is provided on one side of the filter box 3, and an outer frame 38 is fixedly installed on the outside of the groove. A central shaft 381 is installed in the middle of the outer frame 38 for horizontal rotation. One end of the central shaft 381 passes through the outer frame 38 and a gear 384 is fixedly installed. A direction adjusting plate 382 located in the center of the outer frame 38 is fixedly installed in the middle of the central shaft 381. The direction adjusting plate 382 is located in the groove when rotating. A plurality of fans 383 are provided on the side of the direction adjusting plate 382 close to the filter box 3.

[0046] A rotating rod 385 is rotatably installed on the upper part of one side of the outer edge frame 38, and a front frame 386 fixedly connected to the outer edge frame 38 is provided directly below the rotating rod 385. The front frame 386 is L-shaped and a rotating plate 387 is rotatably installed on the side close to the outer edge frame 38 through a motor. A driving plate 388 is fixedly installed in the middle of the rotating rod 385, and teeth meshing with the gear 384 are provided at the lower part of the driving plate 388. A swing frame 389 fixedly connected to the rotating rod 385 is provided on the side of the driving plate 388 away from the outer edge frame 38, and the cylinder on one side of the rotating plate 387 is always located in the swing frame 389.

[0047] Turn on the fan 383 to allow the suspended particles in the grain to pass through the filter in the fan-shaped groove and blow into the side bucket 39, and finally be filtered out through the discharge port 390. When the electric slider is turned on to drive the central axis 381 to rotate, the grain is turned over in the filter box 3. At this time, the fan 383 can evenly blow away the suspended particles in the grain, and the opening of the fan 383 can also blow impurities in the grain into the side bucket 39. The side bucket 39 is rotated so that the discharge port 390 faces downward, thereby cleaning the impurities in the side bucket 39.

[0048] The motor is turned on to drive the rotating plate 387 to rotate, and when the rotating plate 387 rotates, it drives the swing frame 389 to swing left and right. At this time, the swing frame 389 synchronously drives the driving plate 388 to swing left and right through the rotating rod 385. When the driving plate 388 swings left and right, it engages with the gear 384 to drive the central shaft 381 to rotate. When the central shaft 381 rotates, it drives the adjustment plate 382 to rotate. When the adjustment plate 382 rotates, it drives the fan 383 to evenly blow the grain received on the magnetic suction plate 35, so that the suspended particles and light impurities in the grain are fully filtered out.

[0049] A fan-shaped groove is circumferentially provided on one side of the filter box 3 away from the outer frame 38, and a side bucket 39 is provided on the side of the fan-shaped groove away from the outer frame 38. The side bucket 39 is rotatably connected to the filter box 3, a discharge port 390 is provided on the upper part of the side bucket 39, and a through groove is provided on the lower end surface of the filter box 3.

[0050] A rotating rod 12 is rotatably installed at the bottom of the inner cavity of the screening box 1 through an electric slider, a conical plate 121 is fixedly installed on the top of the rotating rod 12, a plurality of circumferentially arranged guide bars 122 are provided below the conical plate 121, the guide bars 122 are fixedly connected to the rotating rod 12, a lifting plate 13 is slidably installed on the outside of the plurality of guide bars 122, a screen drum 14 is fixedly installed on the outside of the lifting plate 13, an annular frame 15 is rotatably installed on the outside of the screen drum 14, and a spring is circumferentially fixedly installed between the outside of the annular frame 15 and the side wall of the inner cavity of the screening box 1.

[0051] A discharge port 16 is provided on one side of the bottom of the screen drum 14, a fixed plate 17 is annularly fixedly installed on the upper part of the inner cavity of the screen drum 14, an elastic rod 171 is slidably installed on the fixed plate 17, a spring is sleeved on the outer side of the elastic rod 171, an electric push rod 18 is fixedly installed on the lower end surface of the screen drum 14, a blocking plate 181 is fixedly installed on the telescopic end of the electric push rod 18, and a discharge plate 19 that passes through the screening box 1 is provided below the blocking plate 181.

[0052] As the center column 31 rotates, the grain on the magnetic plate 35 flips to the bottom of the filter box 3, and finally falls into the screening box 1 through the through slot, the electric slider is turned on to rotate the rotating rod 12, and the rotating rod 12 drives the lifting plate 13 to rotate synchronously when rotating. The setting of the conical plate 121 facilitates the dispersion of the falling grain so that it falls evenly into the screen drum 14. When the grain falls into the screen drum 14, the screen drum 14 drives the grain to shake up and down under the action of the spring, and at this time the lifting plate 13 moves up and down on the guide bar 122. The sieve drum 14 slides down, and the sieve drum 14 rotates along with the rotating rod 12, so that the food in the sieve drum 14 is sieved up and down while rotating, so that the impurities mixed in the food in the sieve drum 14 are filtered out, and the food is brought into contact with the elastic rod 171 while the sieve drum 14 rotates, so that the elastic rod 171 has the effect of stirring the food, and the sieve drum 14 bumps up and down while hitting the elastic rod 171, and the elastic rod 171 bumps up and down and hits the sieve drum 14, so as to further intensify the filtering out of impurities in the food.

[0053] A filter is provided in the fan-shaped groove. When the grain is tumbling in the filter box 3, the fan 383 blows the suspended particles in the grain through the filter to the side bucket 39 and finally discharges them through the discharge port 390. By rotating the side bucket 39 with the discharge port 390 facing downward, the suspended particles remaining in the side bucket 39 are removed.

[0054] When the present invention is used, firstly, the grain is poured onto the spreading rack 24, and the motor is turned on to drive the cam 271 to rotate. When the cam 271 rotates, it pushes the spreading rack 24. Under the action of the spring rod 23, the spreading rack 24 drives the grain to be screened left and right, so that the sand and impurities in the grain are preliminarily removed. The spreading rack 24 is provided with a plurality of convenient ways to improve the efficiency of grain impurity removal. By pulling the spreading rack 24 forward, the moving blocks 22 on both sides slide in the outer rack 21, and the spreading rack 24 is placed above the arc-shaped opening on the upper part of the filter box 3, so as to screen the grain. After the initial screening, the material is unloaded by retracting the telescopic rod 28. The retraction of the telescopic rod 28 drives the connecting frame 281 to move toward the spreading frame 24. When the connecting frame 281 moves, it pushes the blocking plate 242 to flip it. When the connecting frame 281 moves to the inner cavity of the spreading frame 24, the electric slider is turned on to rotate the flipping plate 284. When the flipping plate 284 rotates, the grain in the spreading frame 24 is flipped. At this time, the cam 271 pushes the spreading frame 24 so that the grain in the spreading frame 24 is evenly spread, thereby more fully removing impurities in the grain.

[0055] The magnetic plate 35 receives the grain after the spreading rack 24 is lowered, and the magnetic plate 35 can also absorb the metal particles in the received grain. When the metal particles on the magnetic plate 35 after a certain period of use are removed, the magnetic plate 35 to be cleaned is rotated to the arc-shaped opening above the filter box 3, and then the two limit plates 37 are slid to move the two limit plates 37 in a direction away from each other, and then the sliding rack 34 is pulled upward to cancel the fixation of the magnetic plate 35, and then the magnetic plate 35 is taken out, so as to achieve the cleaning of the magnetic plate 35. , so as to facilitate normal use in the future, the fan 383 is turned on to allow the suspended particles in the grain to pass through the filter screen in the fan-shaped groove and blow into the side bucket 39, and finally be filtered out through the discharge port 390, and when the electric slider is turned on to drive the central shaft 381 to rotate, the grain is turned over in the filter box 3, and at this time, the fan 383 can evenly blow away the suspended particles in the grain, and the opening of the fan 383 can also blow the impurities in the grain into the side bucket 39, and the side bucket 39 is rotated to make the discharge port 390 face downward, so as to clean the impurities in the side bucket 39;

[0056] When the motor is turned on, it drives the rotating plate 387 to rotate. When the rotating plate 387 rotates, it drives the swing frame 389 to swing left and right. At this time, the swing frame 389 synchronously drives the driving plate 388 to swing left and right through the rotating rod 385. When the driving plate 388 swings left and right, it engages with the gear 384 to drive the central shaft 381 to rotate. When the central shaft 381 rotates, it drives the adjustment plate 382 to rotate. When the adjustment plate 382 rotates, it drives the fan 383 to evenly blow the grain received on the magnetic suction plate 35, so that the suspended particles and light impurities in the grain are fully filtered out. Turn on the motor. The movable slider causes the rotating rod 12 to rotate, and when the rotating rod 12 rotates, it drives the lifting plate 13 to rotate synchronously. The setting of the conical plate 121 facilitates the dispersion of the falling grains so that they fall evenly into the sieve drum 14. When the grains fall into the sieve drum 14, the sieve drum 14 drives the grains to shake up and down under the action of the spring. At this time, the lifting plate 13 slides up and down on the guide bar 122, and the sieve drum 14 rotates with the rotating rod 12, so that the grains in the sieve drum 14 are sieved up and down while rotating, so that the impurities mixed in the grains in the sieve drum 14 are filtered out.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A grain impurity removal and screening device, comprising a screening box (1), characterized in that: A fixing frame (10) is fixedly mounted on the upper outer side of the screening box (1), supporting frames (11) are fixedly mounted on both sides of the fixing frame (10), a filter box (3) is fixedly mounted between the two supporting frames (11), an arc-shaped opening is opened on the upper part of the filter box (3), and a spreading unit (2) is provided on the upper part of the fixing frame (10); The spreading unit (2) comprises two groups of outer frames (21) mounted on the upper part of the fixed frame (10), a moving block (22) is slidably mounted on the adjacent side of the two outer frames (21) of each group, a spring rod (23) is fixedly mounted on the adjacent side of the two moving blocks (22), a spreading frame (24) is fixedly mounted between the two spring rods (23), guide plates (25) are slidably mounted on both sides of the lower part of the outer frame (21), the guide plates (25) support the lower part of the spreading frame (24), two fixed blocks (27) arranged up and down are fixedly mounted on the side of the fixed frame (10) away from the outer frame (21), a cam (271) is mounted on the upper end surface of the fixed block (27) through the rotation of a motor, springs are connected to the front and rear sides of the spreading frame (24), and a sliding set located outside the outer frame (21) is fixedly mounted on the side of the spring away from the spreading frame (24).

2. A grain impurity removal and screening device according to claim 1, characterized in that: A material discharge plate (241) is slidably mounted on the front side of the spreading frame (24) through an electric slider, a stop plate (242) is rotatably mounted on the side of the spreading frame (24) away from the material discharge plate (241) through a torsion spring, a slide plate (243) is slidably mounted on the upper end surface of the spreading frame (24), a collecting bucket (26) is detachably mounted on the lower part of the spreading frame (24), telescopic rods (28) are symmetrically mounted on the side of the fixed frame (10) away from the filter box (3), the telescopic ends of the two telescopic rods (28) are commonly fixedly mounted with a connecting frame (281), a moving frame (282) is slidably mounted on the outside of the connecting frame (281), sliding rods are slidably mounted at the four corners of the moving frame (282), a rectangular frame (283) is commonly fixedly mounted on the lower parts of the plurality of sliding rods, a spring is sleeved on the outside of the sliding rods, and a plurality of groups of flip plates (284) are slidably mounted on the middle part of the rectangular frame (283) through an electric slider.

3. A grain impurity removal and screening device according to claim 1, characterized in that: A central column (31) is slidably mounted in the middle of the filter box (3) via an electric slider, a plurality of groups of turning frames (32) are circumferentially mounted on the outer wall of the central column (31), rectangular through grooves are provided on both sides of the turning frames (32), T-shaped rods (33) are slidably mounted in the through grooves, a spring is sleeved on the outside of the T-shaped rods (33), and two T-shaped rods (33) pass through one end of the turning frames (32) and are fixedly mounted with a sliding frame (34).

4. A grain impurity removal and screening device according to claim 3, characterized in that: The middle part of the sliding frame (34) is through-set, and a magnetic attraction plate (35) is placed between the sliding frame (34) and the turning frame (32), and the magnetic attraction plate (35) is convenient for absorbing metal in the grain when receiving the grain. A limiting groove (36) is symmetrically provided on one side of the sliding frame (34) away from the turning frame (32), and a limiting plate (37) is slidably installed in the limiting groove (36), and a spring is commonly connected between one side of the limiting plate (37) and the limiting groove (36).

5. A grain impurity removal and screening device according to claim 1, characterized in that: A groove is provided on one side of the filter box (3), an outer frame (38) is fixedly installed outside the groove, a central shaft (381) is installed in the middle of the outer frame (38) for transverse rotation, one end of the central shaft (381) passes through the outer frame (38) and a gear (384) is fixedly installed, a direction adjustment plate (382) located at the center of the outer frame (38) is fixedly installed in the middle of the central shaft (381), the direction adjustment plate (382) is located in the groove when rotating, and a plurality of fans (383) are provided on the side of the direction adjustment plate (382) close to the filter box (3).

6. A grain impurity removal and screening device according to claim 5, characterized in that: A rotating rod (385) is rotatably mounted on the upper part of one side of the outer frame (38); a front frame (386) fixedly connected to the outer frame (38) is provided directly below the rotating rod (385); the front frame (386) is arranged in an L-shape and a rotating plate (387) is rotatably mounted on a side close to the outer frame (38) through a motor; a driving plate (388) is fixedly mounted on the middle part of the rotating rod (385); teeth meshing with the gear (384) are provided on the lower part of the driving plate (388); a swinging frame (389) fixedly connected to the rotating rod (385) is provided on the side of the driving plate (388) away from the outer frame (38); and a cylinder on one side of the rotating plate (387) is always located in the swinging frame (389).

7. A grain impurity removal and screening device according to claim 1, characterized in that: The filter box (3) is provided with a fan-shaped groove in an annular direction on one side away from the outer frame (38), and a side bucket (39) is provided on the side of the fan-shaped groove away from the outer frame (38). The side bucket (39) is rotatably connected to the filter box (3), and a discharge port (390) is provided on the upper part of the side bucket (39). A through groove is provided on the lower end surface of the filter box (3).

8. The grain impurity removal and screening device according to claim 1, characterized in that: A rotating rod (12) is rotatably mounted on the bottom of the inner cavity of the screening box (1) via an electric slider, a conical plate (121) is fixedly mounted on the top of the rotating rod (12), a plurality of circumferentially arranged guide bars (122) are provided below the conical plate (121), the guide bars (122) are fixedly connected to the rotating rod (12), a lifting plate (13) is slidably mounted on the outside of the plurality of guide bars (122), a screen drum (14) is fixedly mounted on the outside of the lifting plate (13), an annular frame (15) is rotatably mounted on the outside of the screen drum (14), and a spring is circumferentially fixedly mounted between the outside of the annular frame (15) and the side wall of the inner cavity of the screening box (1).

9. A grain impurity removal and screening device according to claim 8, characterized in that: A discharge port (16) is provided at one side of the bottom of the screen drum (14); a fixing plate (17) is fixedly installed in an annular direction on the upper part of the inner cavity of the screen drum (14); an elastic rod (171) is slidably installed on the fixing plate (17); a spring is sleeved on the outer side of the elastic rod (171); an electric push rod (18) is fixedly installed on the lower end surface of the screen drum (14); a blocking plate (181) is fixedly installed at the telescopic end of the electric push rod (18); and a discharge plate (19) penetrating the screening box (1) is provided below the blocking plate (181).

10. A grain impurity removal and screening device according to claim 7, characterized in that: A filter is provided in the fan-shaped groove. When the grain is tumbling in the filter box (3), the fan (383) blows the suspended particles in the grain through the filter into the side bucket (39) and finally discharges the suspended particles through the discharge port (390). The side bucket (39) is rotated to turn the discharge port (390) downward, thereby removing the suspended particles remaining in the side bucket (39).

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